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12 авг 1960 г. - Echo 1-RADIO COMMUNICATIONS

Описание:

Acting as a passive reflector of microwave signals. Communication signals were bounced off it from one point on Earth to another.

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Early History of satellites

ByCamila Alvarez

29 ноя 2018

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Дата:

12 авг 1960 г.

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~ 65 г назад

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